I have a used, very good condtion ARES gas piston conversion for AR15 carines 14.5-16" bbl models. Conversion is complete with the ARES M4 Handguards (unused) and all the bits of the kit, piston rod, etc and instructions!

Want a piston upper, but don't want to have it cost alot? Here is your answer! Great piece of kit, ran flawless @300 rounds through it.